Mike Romain wrote:
> Tom Henderson wrote:
>> Tom Henderson wrote:
>>> Hello from a Jeep newb!
>>>
>>> Was driving my 1997 wrangler in the rain today, and switched the vent
>>> over to defrost with the fan on high. The side defrost vents had very
>>> good airflow, but there was almost none from the vent that blows air
>>> on the wind****eld. There was also a whistling sound from that vent
>>> like air was trying to get around an obstruction. The other vent
>>> positions (dash, floor) seem to work fine.
>>>
>>> What should I be checking?
>>>
>>> Thanks,
>>>
>>> Tom
>>
>> OK, got a closer look today. The vacuum lines that connect to the vent
>> control switch look OK. When I slide the control to the right from the
>> "Floor only" to "floor/defrost", I can hear a vacuum leak sound that
>> lasts a second or two.
>>
>> Another thing I discovered is somewhat of a workaround. If I slide the
>> control all the way to the left (off), and turn the fan control to
>> low, then slide it over to the right, the air flows through the
>> wind****eld vent normally. this continues as I move the fan to the ext
>> highest speed, but when i go to the 3rd, you can hear a vent door slam
>> shut (I guessing that's what it is) and the whistling sound of trapped
>> air resumes, as well and almost no air flow from the wind****eld vent.
>>
>> Has anyone run into something like that before? I'd like to take a
>> look at the other end of those vacuum lines, but it appears I would
>> have to remove the entire dash to do that, and I haven't worked up the
>> guts for that yet.
>
> The valves do fail. There is one on the GC that should be a recall but
> isn't because it is a sleazy $1000.00 labor cash grab to fix it.
>
> Yours sounds like one has failed.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 'New' frame in the works for '08. Some Canadian Bush Trip and Build
> Photos: http://mikeromainjeeptrips.shutterfly.com
Found the solution.
http://www.jeepforum.com/forum/showthread.php?t=66176&highlight=broken+heater
There's a lever that you can replace, but the manufacturer's official
solution is to replace the entire vent assembly, $200 for the vent
assembly, plus god know what for labor, since the whole dash has to come
out.
You can get the lever online for $20-30, and the part can be replaced
without dash removal. Woohoo!
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